Centrifugal casting apparatus



April 1929- c. PARDUN ET AL 1,708,849

GENTRIFUGAL CASTING APPARATUS Filed June 16. 1928 Im e 2160215 PM um cant rnannn Ann rant von'r'rnn, or GELSENKIRCHEN, GERMANY, assron'ons, nv nrnsnn nssrennnn'rs, ro onnrnrruonr. PIPE conronnrmn, a coarona'rmu on DELAWARE.

CENTRIFUGAL CASTING APPARATUS.

application filed June 16, 1928, flerial No.

The present invention relates to the art of casting pipes and other hollow bodies by the centrifugal casting process, in which molten metal is helically deposited in a mold rotating about a substantially horizontal axis by.

means of a trough, channel tube or the like, either the mold or the trough, etc., being capable of axial movement relative to the other part during the deposition of the metal. W in the casting of hollow bodies according to this method difficulties have been encountered in preventing the trough, channel tube or other feeding means from sufiering deformation during the casting, the heat transmitted to the feeding means by the molten metal flowing through it and also, through radiation, by the metal in the mold being the cause of material changes of form of this feeding means. Obviously such deformation of the feeding means may cause same to come in contact with the casting produced and may create trouble in the operation of the process.

[is this deformation is most likely to the mold and the trough. The support may be applied at a fixed point along the'trough after the pouring has proceeded a predetermined length of time or the support may be movable and proceed outwardly along the trough as the mold recedes, such supporting means being preferably mounted independently of the mold in order to avoid the transmission of shocks and undue vibrations onto this trough.

lln the drawings axed to this specification and forming part thereof several modifications of a centrifugal casting installation embodying this invention are illustrated diagrammatically by way of example.

in the drawings,

Fig. l is a side elevation partly in axial 5 take place after. the pouring has proceeded 285,896, and in Germany October 6,

section of a stationary trough or other feedlng means cooperating with a reciprocable mold showing a foldable support for the trough, and

Fig. 2 is a similar View of a modification,

in which the support is mounted on a movable truck. l

1 Referring first to Fig. 1, 1 is the feeding means, which is here shown in the form of a trough or channel, one end resting on'a column 15. 6 is the track carrying the centrifugal 'mold and movable axially relative to the trough 1. I

5 is a strut having the form of a doublearmed lever hinged to a block 16 and carrying a roller 17 at one end and a counterweight 11 at the other. Ubviously the strut 5 may be held by suitable means in inoperative position until it is released either by hand or by the movable mold whereupon the counterwei ht 11 will cause the strut 5 to rock about its hinge point, whereby the roller is applied against the trough 1, thereby supporting same.

life may for instance provide a pair of bars 20 below the movable mold 6 and fixed thereto, these bars 20 forming a support for the weighted arm of lever 5 to hold same in horizontal position as long as the mold 6 surrounds the trough l. @n the mold 6 moving to the left in accordance with the progress of the introduction of fluid metal, the bars 20 Will glide with the mold to the left underneath the weighted arm of lever 5 until this arm is released by-the right hand ends of the bars 20, whereupon the weight ll depresses bottom. The truck may be coupled with the mold 6 and may be displaced byit.

Preferably the track for the truck 10 1s independent from the frame of the trucklt] carryin the mold in order to prevent the shocks rom being transmitted onto the feeding means.

Various changes may be made in the details disclosed in the foregoing specification without departing from the invention or sacrificing the advantages thereof.

\Ve claim 1. Apparatus for casting metal centrifugally comprising a mold rotating about a substantially horizontal axis, a trough for holic'ally depositing metal therein, the mold and trough being axially movable relative to each other, and means for supporting the trough intermediate its ends,said means constituting no part of the trough and being ,moved into operative su porting position after the begmning of t e casting operation.

2. Apparatus as claimed in claim 1, in which the trough is fixed and the mold movable, and the supportin means is in the form of a swinging arm 1101 out of contact with the trough until the mold has moved a predetermined distance.

In testimony whereof we aflix'our signatures.

CARL PARDUN. PAUL VOETTER. 

